*{
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
}
.header{
    width: 100%;
    background-color: rgb(46, 44, 44);
    color: white;

}
ul{
    display: flex;
    flex-direction: row;
    justify-content: center;
}
ul li{
    list-style-type: none;
    padding: 15px;
    cursor: pointer;
    transition: .4s linear;
}
ul li:hover{
    color: yellow;
}
#sub-header-heading{
    margin: auto;
    margin-top: 30px;

}
#sub-header-heading h3{
    text-align: center;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 24px;
    word-spacing: 12px;
    letter-spacing: 2px;
}
.book-cover{
    border: 1px solid black;
    border-radius: 10px;
    position: relative;
    margin-top: 20px;
}
.book-main {
    background-color: lightgrey;
    width: 104%;
    margin-left: -12px;
    border-radius: 10px 10px 0px 0px;
}
.about{
    width: 70%;
    margin-left: 170px;
}
.about h2{
    font-size: 15px;
    padding-top: 30px;
    padding-right: 20px;
    text-align: right;

}
.name h1{
    text-align: right;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: 200;
    margin-top: 30px;
    padding-right: 30px;
    padding-bottom: 10px;
}
.logo{
    background-color: black;
    color: white;
    font-size: 14px;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: 100;
    padding: 5px;
    position: absolute;
    top: 0px;
    left: 20px;
}
.logo h1 {
    font-size: 26px;
}
.series h1{
    font-size: 90px;
    text-align: right;
    text-transform: uppercase;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: 100;
    margin: 30px;
}
.last-js {
    background-color: yellow;
    border-radius: 0px 0px 10px 10px;
    position: relative;
    width: 104%;
    margin-left: -12px;
    margin-bottom: -8px;
}
.last-js h1{
    font-size: 360px;
    font-family: Arial, Helvetica, sans-serif;
    text-align: right;
}
.last-js h3 {
    font-family: Arial, Helvetica, sans-serif;
    font-weight: 300;
    font-size: 27px;
    transform: rotate(-90deg);
    color: yellow;
    position: absolute;
    top: 185px;
    left: 170px;
    word-spacing: 2px;
}
.main-second{
    margin-top: 200px;
}
.main-second h3{
    font-size: 16px;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: 300;
    word-spacing: 10px;
    letter-spacing: 1px;
    text-align: center;
}
#btn{
    width: 60%;
    background-color: rgb(171, 113, 4);
    color: white;
    padding: 10px;
    border: none;
    border-radius: 5px;
    text-align: center;
    margin: auto;
    margin-left: 120px;
    margin-top: 20px;
    transition: .4s linear;
}
#btn:hover{
    background-color: black;
}
.footer{
    width: 100%;
    text-align: center;
    background-color: black;
    color: white;
    padding-top: 70px;
    margin-top: 30px;
}
.footer h1{
    font-family: Arial, Helvetica, sans-serif;
    font-size: 18px;
    font-weight: 200;
}
#footer-btn{
    width: 600px;
    background-color: rgb(171, 113, 4);
    color: white;
    padding: 10px;
    border: none;
    border-radius: 5px;
    text-align: center;
    margin-top: 20px;
    margin-bottom: 20px;
    transition: .4s linear;
}
#footer-btn:hover{
    background-color: #fff;
    color: black;
}

@media screen and (min-width:320px) and (max-width:375px){
    ul li a{
        font-size: 8px;
    }
    .book-cover {
        border: 1px solid black;
        border-radius: 10px;
        position: relative;
        margin: 11px;
    }
    .logo h1 {
        font-size: 14px;
    }
.main{
    width: 100%;
}
.about {
    width: 77%;
    margin-left: 84px;
}
    .about h2 {
        font-size: 10px;
        padding-top: 31px;
        padding-right: 20px;
        text-align: right;
    }
    .book-main {
        background-color: lightgrey;
        width: 107.5%;
        margin-left: -12px;
        border-radius: 10px 10px 0px 0px;
    }
    .logo {
        background-color: black;
        color: white;
        font-size: 7px;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 100;
        padding: 5px;
        position: absolute;
        top: 0px;
        left: 20px;
    }
    .name h1 {
        text-align: right;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 200;
        font-size: 20px;
        margin-top: 30px;
        padding-right: 20px;
        padding-bottom: 10px;
    }
    .name h1 {
        text-align: right;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 200;
        margin-top: 30px;
        font-size: 20px;
        padding-right: 16px;
        padding-bottom: 10px;
    }
    .name h1 {
        text-align: right;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 200;
        font-size: 20px;
        margin-top: 30px;
        padding-right: 13px;
        padding-bottom: 10px;
    }
    .series h1 {
        font-size: 45px;
        text-align: right;
        text-transform: uppercase;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 100;
        margin: 18px;
    }
    .last-js {
        background-color: yellow;
        border-radius: 0px 0px 10px 10px;
        position: relative;
        width: 107.5%;
        margin-left: -12px;
        margin-bottom: -8px;
    }
    .last-js h1 {
        font-size: 186px;
        font-family: Arial, Helvetica, sans-serif;
        text-align: right;
        margin-right: 12px;
        letter-spacing: -2px;
    }
    .last-js h3 {
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 300;
        font-size: 13px;
        transform: rotate(-90deg);
        color: yellow;
        position: absolute;
        top: 95px;
        left: 133px;
        word-spacing: 3px;
    }
    .main-second {
        margin-top: 80px;
    }
    .main-second h3 {
        margin: auto;
        font-size: 13px;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 300;
        word-spacing: 10px;
        letter-spacing: 1px;
        text-align: center;
        padding-bottom: 0px;
    }
    .order-section{
        width: 80%;
    }
    #btn {
        width: 254px;
        background-color: rgb(171, 113, 4);
        color: white;
        padding: 10px;
        border: none;
        border-radius: 5px;
        text-align: center;
        margin-left: 49px;
        margin-top: 20px;
    }
    .footer h1 {
        font-family: Arial, Helvetica, sans-serif;
        font-size: 13px;
        font-weight: 200;
    }
    #footer-btn {
        width: 285px;
        background-color: rgb(171, 113, 4);
        color: white;
        padding: 8px;
        border: none;
        border-radius: 5px;
        text-align: center;
        margin-top: 20px;
        margin-bottom: 20px;
    }
}


@media screen and (min-width:376px) and (max-width:480px){
    ul li a{
        font-size: 8px;
    }
    .book-cover {
        border: 1px solid black;
        border-radius: 10px;
        position: relative;
        margin: 12px;
    }
    .main{
        width: 100%;
    }

    .logo h1 {
        font-size: 14px;
    }
    .about {
        width: 77%;
        margin-left: 84px;
    }
    .about h2 {
        font-size: 10px;
        padding-top: 31px;
        padding-right: 20px;
        text-align: right;
    }
    .book-main {
        background-color: lightgrey;
        width: 106%;
        margin-left: -12px;
        border-radius: 10px 10px 0px 0px;
    }
    .name h1 {
        text-align: right;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 200;
        font-size: 20px;
        margin-top: 30px;
        padding-right: 23px;
        padding-bottom: 10px;
    }
    .logo {
        background-color: black;
        color: white;
        font-size: 6px;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 100;
        padding: 5px;
        position: absolute;
        top: 0px;
        left: 20px;
    }
    .series h1 {
        font-size: 47px;
        text-align: right;
        text-transform: uppercase;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 100;
        margin: 30px;
    }
    .last-js {
        background-color: yellow;
        border-radius: 0px 0px 10px 10px;
        position: relative;
        width: 106%;
        margin-left: -12px;
        margin-bottom: -8px;
    }
    .last-js h1 {
        font-size: 210px;
        font-family: Arial, Helvetica, sans-serif;
        text-align: right;
        margin-right: 20px;
        letter-spacing: 2px;
    }
    .last-js h3 {
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 300;
        font-size: 15px;
        transform: rotate(-90deg);
        color: yellow;
        position: absolute;
        top: 106px;
        left: 141px;
        word-spacing: 1px;
    }
    .main-second {
        margin-top: 81px;
    }
    .main-second h3 {
        font-size: 10px;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 300;
        word-spacing: 8px;
        letter-spacing: 1px;
        text-align: center;
        padding-bottom: 0px;
    }
    #btn {
        width: 285px;
        background-color: rgb(171, 113, 4);
        color: white;
        padding: 10px;
        border: none;
        border-radius: 5px;
        text-align: center;
        margin-left: 62px;
        margin-top: 20px;
    }
    .footer h1 {
        font-family: Arial, Helvetica, sans-serif;
        font-size: 12px;
        font-weight: 200;
    }
    #footer-btn {
        width: 299px;
        background-color: rgb(171, 113, 4);
        color: white;
        padding: 10px;
        border: none;
        border-radius: 5px;
        text-align: center;
        margin-top: 20px;
        margin-bottom: 20px;
    }
}


@media screen and (min-width:481px) and (max-width:768px) {
    .main {
        width: 100%;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }
    .book-cover {
        width: 80%;
        border: 1px solid black;
        border-radius: 10px;
        position: relative;
        margin-top: 20px;
    }
    .book-main {
        background-color: lightgrey;
        width: 103.6%;
        margin-left: -12px;
        border-radius: 10px 10px 0px 0px;
    }
    .about {
        width: 76%;
        margin-left: 123px;
    }
    .about h2 {
        font-size: 12px;
        padding-top: 30px;
        padding-right: 20px;
        text-align: right;
    }
    .name h1 {
        text-align: right;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 200;
        font-size: 20px;
        margin-top: 30px;
        padding-right: 23px;
        padding-bottom: 10px;
    }
    .logo {
        background-color: black;
        color: white;
        font-size: 7px;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 100;
        padding: 5px;
        position: absolute;
        top: 0px;
        left: 20px;
    }
    .series h1 {
        font-size: 61px;
        text-align: right;
        text-transform: uppercase;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 100;
        margin: 30px;
    }
    .last-js {
        background-color: yellow;
        border-radius: 0px 0px 10px 10px;
        position: relative;
        width: 103.6%;
        margin-left: -12px;
        margin-bottom: -8px;
    }
    .last-js h1 {
        font-size: 255px;
        font-family: Arial, Helvetica, sans-serif;
        text-align: right;
        margin-right: 30px;
        letter-spacing: -18px;
    }  
    .last-js h3 {
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 300;
        font-size: 18px;
        transform: rotate(-90deg);
        color: yellow;
        position: absolute;
        top: 129px;
        left: 420px;
        word-spacing: 1px;
    }
    .main-second {
        margin-top: 78px;
    }
    .main-second h3 {
        font-size: 14px;
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 300;
        word-spacing: 10px;
        letter-spacing: 1px;
        text-align: center;
        padding-bottom: 0px;
    }
    .order-section {
        width: 100%;
    }
#btn {
    width: 285px;
    background-color: rgb(171, 113, 4);
    color: white;
    padding: 10px;
    border: none;
    border-radius: 5px;
    text-align: center;
    margin-left: 189px;
    margin-top: 20px;
}
.footer h1 {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    font-weight: 200;
}
#footer-btn {
    width: 376px;
    background-color: rgb(171, 113, 4);
    color: white;
    padding: 10px;
    border: none;
    border-radius: 5px;
    text-align: center;
    margin-top: 20px;
    margin-bottom: 20px;
}
}
@media screen and (min-width:769px) and (max-width:991px) {
    .book-main {
        background-color: lightgrey;
        width: 103.6%;
        margin-left: -12px;
        border-radius: 10px 10px 0px 0px;
    }
    .last-js h3 {
        font-family: Arial, Helvetica, sans-serif;
        font-weight: 300;
        font-size: 27px;
        transform: rotate(-90deg);
        color: yellow;
        position: absolute;
        top: 185px;
        left: 315px;
        word-spacing: 2px;
    }
    .last-js {
        background-color: yellow;
        border-radius: 0px 0px 10px 10px;
        position: relative;
        width: 103.6%;
        margin-left: -12px;
        margin-bottom: -8px;
    }
    .main-second {
        margin-top: 100px;
    }
    #btn {
        width: 60%;
        background-color: rgb(171, 113, 4);
        color: white;
        padding: 10px;
        border: none;
        border-radius: 5px;
        text-align: center;
        margin: auto;
        margin-left: 130px;
        margin-top: 20px;
        transition: .4s linear;
    }
}


@media screen and (min-width:992px) and (max-width:1399px) {
    .book-main {
        background-color: lightgrey;
        width: 104.3%;
        margin-left: -12px;
        border-radius: 10px 10px 0px 0px;
    }    
    .last-js {
        background-color: yellow;
        border-radius: 0px 0px 10px 10px;
        position: relative;
        width: 104.2%;
        margin-left: -12px;
        margin-bottom: -8px;
    }
    #btn {
        width: 60%;
        background-color: rgb(171, 113, 4);
        color: white;
        padding: 10px;
        border: none;
        border-radius: 5px;
        text-align: center;
        margin: auto;
        margin-left: 108px;
        margin-top: 20px;
        transition: .4s linear;
    }
}